aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Grid/ScriptEngine/DotNetEngine/LSLLongCmdHandler.cs
blob: 544d8be81655d6f5b1603b1bd9255ff8770d199f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
using libsecondlife;
using OpenSim.Region.ScriptEngine.Common;
using OpenSim.Region.Environment.Modules;
using OpenSim.Region.Environment.Interfaces;

namespace OpenSim.Grid.ScriptEngine.DotNetEngine
{
    /// <summary>
    /// Handles LSL commands that takes long time and returns an event, for example timers, HTTP requests, etc.
    /// </summary>
    class LSLLongCmdHandler
    {
        private Thread cmdHandlerThread;
        private int cmdHandlerThreadCycleSleepms = 100;

        private ScriptEngine m_ScriptEngine;
        public LSLLongCmdHandler(ScriptEngine _ScriptEngine)
        {
            m_ScriptEngine = _ScriptEngine;

            // Start the thread that will be doing the work
            cmdHandlerThread = new Thread(CmdHandlerThreadLoop);
            cmdHandlerThread.Name = "CmdHandlerThread";
            cmdHandlerThread.Priority = ThreadPriority.BelowNormal;
            cmdHandlerThread.IsBackground = true;
            cmdHandlerThread.Start();

        }
        ~LSLLongCmdHandler()
        {
            // Shut down thread
            try
            {
                if (cmdHandlerThread != null)
                {
                    if (cmdHandlerThread.IsAlive == true)
                    {
                        cmdHandlerThread.Abort();
                        cmdHandlerThread.Join();
                    }
                }
            }
            catch { }
        }

        private void CmdHandlerThreadLoop()
        {
            while (true)
            {
                // Check timers
                CheckTimerEvents();
                Thread.Sleep(25);
                // Check HttpRequests
                CheckHttpRequests();
                Thread.Sleep(25);
                // Check XMLRPCRequests
                CheckXMLRPCRequests();
                Thread.Sleep(25);
                // Check Listeners
                CheckListeners();
                Thread.Sleep(25);

                // Sleep before next cycle
                //Thread.Sleep(cmdHandlerThreadCycleSleepms);
            }
        }

        /// <summary>
        /// Remove a specific script (and all its pending commands)
        /// </summary>
        /// <param name="m_localID"></param>
        /// <param name="m_itemID"></param>
        public void RemoveScript(uint localID, LLUUID itemID)
        {
            // Remove a specific script

            // Remove from: Timers
            UnSetTimerEvents(localID, itemID);
            // Remove from: HttpRequest
            StopHttpRequest(localID, itemID);
        }

        #region TIMER

        //
        // TIMER
        //
        private class TimerClass
        {
            public uint localID;
            public LLUUID itemID;
            public double interval;
            public DateTime next;
        }
        private List<TimerClass> Timers = new List<TimerClass>();
        private object TimerListLock = new object();
        public void SetTimerEvent(uint m_localID, LLUUID m_itemID, double sec)
        {
            Console.WriteLine("SetTimerEvent");

            // Always remove first, in case this is a re-set
            UnSetTimerEvents(m_localID, m_itemID);
            if (sec == 0) // Disabling timer
                return;

            // Add to timer
            TimerClass ts = new TimerClass();
            ts.localID = m_localID;
            ts.itemID = m_itemID;
            ts.interval = sec;
            ts.next = DateTime.Now.ToUniversalTime().AddSeconds(ts.interval);
            lock (TimerListLock)
            {
                Timers.Add(ts);
            }
        }
        public void UnSetTimerEvents(uint m_localID, LLUUID m_itemID)
        {
            // Remove from timer
            lock (TimerListLock)
            {
                List<TimerClass> NewTimers = new List<TimerClass>();
                foreach (TimerClass ts in Timers)
                {
                    if (ts.localID != m_localID && ts.itemID != m_itemID)
                    {
                        NewTimers.Add(ts);
                    }
                }
                Timers.Clear();
                Timers = NewTimers;
            }
        }
        public void CheckTimerEvents()
        {
            // Nothing to do here?
            if (Timers.Count == 0)
                return;

            lock (TimerListLock)
            {

                // Go through all timers
                foreach (TimerClass ts in Timers)
                {
                    // Time has passed?
                    if (ts.next.ToUniversalTime() < DateTime.Now.ToUniversalTime())
                    {
                        // Add it to queue
                        m_ScriptEngine.m_EventQueueManager.AddToScriptQueue(ts.localID, ts.itemID, "timer", new object[] { });
                        // set next interval


                        ts.next = DateTime.Now.ToUniversalTime().AddSeconds(ts.interval);
                    }
                }
            } // lock
        }
        #endregion

        #region HTTP REQUEST

        //
        // HTTP REAQUEST
        //
        private class HttpClass
        {
            public uint localID;
            public LLUUID itemID;
            public string url;
            public List<string> parameters;
            public string body;
            public DateTime next;

            public string response_request_id;
            public int response_status;
            public List<string> response_metadata;
            public string response_body;

            public void SendRequest()
            {
                // TODO: SEND REQUEST!!!
            }
            public void Stop()
            {
                // TODO: Cancel any ongoing request
            }
            public bool CheckResponse()
            {
                // TODO: Check if we got a response yet, return true if so -- false if not
                return true;

                // TODO: If we got a response, set the following then return true
                //response_request_id
                //response_status
                //response_metadata
                //response_body

            }
        }
        private List<HttpClass> HttpRequests = new List<HttpClass>();
        private object HttpListLock = new object();
        public void StartHttpRequest(uint localID, LLUUID itemID, string url, List<string> parameters, string body)
        {
            Console.WriteLine("StartHttpRequest");

            HttpClass htc = new HttpClass();
            htc.localID = localID;
            htc.itemID = itemID;
            htc.url = url;
            htc.parameters = parameters;
            htc.body = body;
            lock (HttpListLock)
            {

                //ADD REQUEST
                HttpRequests.Add(htc);
            }
        }
        public void StopHttpRequest(uint m_localID, LLUUID m_itemID)
        {
            // Remove from list
            lock (HttpListLock)
            {
                List<HttpClass> NewHttpList = new List<HttpClass>();
                foreach (HttpClass ts in HttpRequests)
                {
                    if (ts.localID != m_localID && ts.itemID != m_itemID)
                    {
                        // Keeping this one
                        NewHttpList.Add(ts);
                    }
                    else
                    {
                        // Shutting this one down
                        ts.Stop();
                    }
                }
                HttpRequests.Clear();
                HttpRequests = NewHttpList;
            }
        }
        public void CheckHttpRequests()
        {
            // Nothing to do here?
            if (HttpRequests.Count == 0)
                return;

            lock (HttpListLock)
            {
                foreach (HttpClass ts in HttpRequests)
                {

                    if (ts.CheckResponse() == true)
                    {
                        // Add it to event queue
                        //key request_id, integer status, list metadata, string body
                        object[] resobj = new object[] { ts.response_request_id, ts.response_status, ts.response_metadata, ts.response_body };
                        m_ScriptEngine.m_EventQueueManager.AddToScriptQueue(ts.localID, ts.itemID, "http_response", resobj);
                        // Now stop it
                        StopHttpRequest(ts.localID, ts.itemID);
                    }
                }
            } // lock
        }
        #endregion

        public void CheckXMLRPCRequests()
        {

            IXMLRPC xmlrpc = m_ScriptEngine.World.RequestModuleInterface<IXMLRPC>();

            while (xmlrpc.hasRequests())
            {
                RPCRequestInfo rInfo = xmlrpc.GetNextRequest();
                System.Console.WriteLine("PICKED REQUEST");

                //Deliver data to prim's remote_data handler
                object[] resobj = new object[] { 
                    2, rInfo.GetChannelKey().ToString(), rInfo.GetMessageID().ToString(), "", rInfo.GetIntValue(), rInfo.GetStrVal() 
                };
                m_ScriptEngine.m_EventQueueManager.AddToScriptQueue(
                    rInfo.GetLocalID(), rInfo.GetItemID(), "remote_data", resobj
                );

            }

        }

        public void CheckListeners()
        {

            IWorldComm comms = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();

            while (comms.HasMessages())
            {
                ListenerInfo lInfo = comms.GetNextMessage();
                System.Console.WriteLine("PICKED LISTENER");

                //Deliver data to prim's listen handler
                object[] resobj = new object[] {
                    lInfo.GetChannel(), lInfo.GetName(), lInfo.GetID().ToString(), lInfo.GetMessage() 
                };

                m_ScriptEngine.m_EventQueueManager.AddToScriptQueue(
                    lInfo.GetLocalID(), lInfo.GetItemID(), "listen", resobj
                );

            }

        }




    }
}